Yeah, Disneyland is still pretty awesome. It might even be awesome-er. It is a different type of trip than WDW, but there are so many things that are better at DL or rides/attractions you can't see in Florida.
Here is my quick list:
Better at DL
1.Pirates
2.Space Mountain-waaay faster and smoother ride
3.Downtown Disney (you can walk there from all the resort hotels plus most good neighbor hotels)
4.Splash Mountain
5.Small World-by a mile
6.Fantasmic-by a mile
7.Main Street USA (theming is more authentic-this land in its original form ie the one at DL was inspired by Marceline, his home town. The one in Orlando has a more Victorian feel. Nothing wrong with it, just not exactly what he intended.)
Not at WDW But Available at DL
1.Matterhorn Bobsleds-Walt helped develop this ride and used to ride it himself!
2.Indiana Jones-one of my absolute favorite rides!
3.Mr. Toad's Wild Ride
4.Snow White's Scary Adventures
5.California Screamin'
6.Storybookland Canal Boats
7.Sleeping Beauty Castle Walk thru attraction
8.Cars Land! This is a big one. It is awesome!
9.Radiator Springs Racers (in Cars Land). Park guests who have visited both parks have declared this the best attraction ever at a Disney park!
10.Bugs Land-just about the cutest thing you'll ever see.
Ok so there are plenty more things I could list or describe, but that is enough to get you excited I hope. Check out my DL Dining Review to see samples of some of the food, which is also excellent, but in a different way. You don't need as many ressies and can just eat what you feel like almost all of the time with very good counter service options that serve you on real plates and with real silverware!
Depending on the weather and how long you will be staying, you can visit a beach and really take in the whole southern California experience. Or you can stay at the DLR or a good neighbor resort and walk anywhere and everywhere you might need to go! It's great having everything within walking distance.
I know you will have a great time, but there is so much to see and do, that I'd recommend you get a Birnbaum's guide to DL just so you can brush up on what's availabe so you don't miss out. I have seen other WDW fans go to DL for a one-time trip and they don't realize all there is to see and do, so they leave with the impression that DL is somehow "less than" WDW.